Technical Instructions for
Correlation Sensors
®
Correlation Sensors – Rev. 07 as of 20.04.2016
Page 59
7
Maintenance and Cleaning
WARNING
Germ contamination
Due to using the sensors mostly in the waste water field which may be con-
taminated with hazardous germs, please ensure to take respective precau-
tions getting in contact with system, transmitter, cables and sensors.
In heavily polluted media tending to sedimentation it may be necessary to clean
the flow velocity sensor regularly. To do so, please use a brush with plastic bris-
tles, a broom or similar.
Polluted plugs (sensor connection F or S) and sockets must be cleaned and
dried before reconnect a sensor. Remove touch dry dirt with compressed air or
by using a brush with plastic bristles (no metal!). If required, maintain the con-
tacts by using a contact spray.
WARNING
Damage by hard objects
No hard objects such as wire brushes, rods, scrapers or similar shall be used
to clean the sensor. Cleaning by using a water jet is allowed up to a max. pres-
sure of 4 bar (see Specifications) (e.g. using a water hose). Never clean flow
velocity sensors with pressure measurement cell (types V2D and V2U) by us-
ing a water jet!
Using a high pressure cleaner may damage the sensor resulting in measure-
ment failure and is therefore absolutely not allowed.
7.1
Water-US Combi Sensor with Pressure Measurement
WARNING
Do not remove parts
Removing or loosening of the ground plate or cable gland results in leakage
and therefore will cause measurement and sensor failure.
Only the cover of the pressure measurement is allowed to be removed. Do
absolutely not remove other parts of the sensor!!
WARNING
Damage of pressure measurement cell during cleaning
Never clean the pressure cell using a water jet, screw driver or similar!
It is not permitted to touch the probe with the fingers or other objects
(see Fig. 7-1)
This will irreversibly damage the pressure cell!
It is allowed to clean the pressure measurement by using slight flushing
movements in a vessel filled with water.
Bei Verletzung dieses Verbotes erlischt die Gewährleistung seitens des Her-
stellers! If in doubt please let NIVUS do the cleaning
